Cylinder head
Ref. | Part Number | Description | Per | Year | Model |
NI | GS339 | Gasket Set | 1 | 1972-73 | All B50 |
NI | PACK-ADV-002 | Valve & guide pack | A | All | |
NI | PACK-INTER-002 | Top end overhaul pack | A | All | All |
NI | PACK-START-005 | Exhaust pack | A | All | All |
1 | 02-0443 | Nut – valve Lifter (1/4 B.S.C.) | 1 | 1971-73 | B50 T SS H |
2 | 02-0525 | Plain washer, valve lifter, inner | 1 | 1971-73 | All B50 |
3 | 15-5155 | Plain washer, valve lifter, outer | 1 | 1971-73 | All B50 |
4 | 40-0417 | Exhaust valve lifter Spindle | 1 | 1971-73 | All B50 |
5 | 14-0402 | Nut- rocker box, beneath head steady bracket | 2 | 1972-73 | All B50 |
5 | 14-0302 | Nut, rocker box | 7 | 1971-73 | All B50 |
6 | 60-2428 | Spring washer, rocker box | 9 | 1971-73 | All B50 |
7 | 60-2330 | Washer (5/16 x 5/8 x 1/16) | 9 | 1971-73 | All B50 |
8 | 71-1429 | Gasket – rocker inspection cover | 1 | 1971-73 | All B50 |
9 | 40-0208 | Rocker inspection cover | 1 | 1971-73 | All B50 |
10 | 71-1627 | Exhaust valve glide, oversize available +0.012 | 1 | 1971-73 | All B50 |
11 | 40-0309 | Screw – rocker inspection cover (2 B.A. x 1 3/8) | 1 | 1971-73 | All B50 |
12 | 71-1736 | Exhaust valve | 1 | 1971-73 | All B50 |
13 | 21-2135 | Stud -cylinder head (5/16 UN.C./UN,F. x 3 1/16 ) | 3 | 1972-73 | All B50 |
14 | 71-3148 | Low level pipe | 1 | 1971-73 | B50 H |
14 | 71-2899 | Exhaust pipe complete | 1 | 1972 | B50 MX |
14 | 71-2177 | Exhaust pipe complete | 1 | 1971-72 | All B50 |
14 | 71-3801 | Exhaust pipe, complete with bracket | 1 | 1973 | B50 MX |
15 | 71-1732 | Cylinder head with fixed fittings | 1 | 1971-73 | All B50 |
16 | 14-1302 | Nut, carb fixing | 2 | ||
17 | 71-2592 | Insulating washer -carburetter joint | 1 | 1971-73 | B50 MX |
17 | 70-7821 | Insulating washer – carburetter joint | 1 | 1971-72 | All B50 |
18 | 71-2593 | Gasket -carburetter joint | 1 | 1971-73 | B50 MX |
18 | 71-1421 | Carburetter joint gasket | 1 | 1971-72 | All B50 |
19 | 14-1619 | Stud (5/16 UN.C./UN.F. X 1 1/4 ) | 2 | 1972-73 | All B50 |
20 | 71-1735 | Inlet valve | 1 | 1971-73 | All B50 |
21 | 68-0931 | Valve spring bottom cup | 1 | 1971-73 | All B50 |
22 | 71-1626 | Inlet valve guide | 1 | 1971-73 | All B50 |
23 | 65-2494 | Valve spring outer supplied as a complete Set | 2 | 1971-73 | All B50 |
24 | 65-2495 | Valve spring inner supplied as a complete Set | 2 | 1971-73 | All B50 |
25 | 71-1165 | Valve spring top collar | 2 | 1971-73 | All B50 |
26 | 71-1166 | Valve spring collet | 4 | 1971-73 | All B50 |
27 | 21-2133 | Stud –cylinder head (5/16 UN.F./UN.C. 2 9/16 ) | 2 | 1972-73 | All B50 |
28 | 71-1989 | Cylinder head dowel | 2 | 1971-73 | All B50 |
29 | 14-1627 | Cylinder head stud (5/16 UN.C./UN.F. X 3) | 2 | 1971 | B50 |
29 | 21-2134 | Stud -cylinder head (5/16 UN.C./UN.F. X 2 13/16 ) | 2 | 1972-73 | All B50 |
30 | 21-2092 | Rocker box stud (5/16 UN.C./UN.F. X 3 1/4) | 2 | 1971-73 | All B50 |
31 | 71-1623 | Rocker box gasket | 1 | 1971-73 | All B50 |
32 | 71-1638 | Rocker box | 1 | 1971-72 | All B50 |
32 | 71-3255 | Rockerbox | 1 | 1973 | B50 MX |
33 | 40-0969 | Washer – valve inspection cap | 2 | 1971-72 | All B50 |
33 | 97-3765 | ‘O’ ring -valve inspection cap” | 2 | 1973 | B50 MX |
34 | 40-0968 | Valve inspection cap | 2 | 1971-73 | All B50 |
35 | 68-0289 | ‘O’ ring – valve lifter spindle | 1 | 1971-73 | B50 T SS H |
36 | 71-2938 | Exhaust valve lifter lever | 1 | 1971 | B50 T SS H |
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